My Basenji has displayed the following:
Sneezing uncontrollably
Rubbing nose
Drainage from nose, pus and blood
Fever
Loss of energy
Antibiotics for 5 days with no change, still feverish
Unsteady and off balance
Constipated/ or lack of voluntary muscle movement to have a bm, vomiting

Vet stated that he didnt see any infection and he believes there is an underlying problem.

Fyi: I read about foxtails -symptoms and treatment. I have this plant in my backyard. I took pictures of her nose and it doesn't look good but why would the doctor not see this?